The Nashbar 48mm Long Valve Presta Tube features utterly reliable butyl rubber construction that ensures both awesome air retention plus durability for the long haul. They're often taken for granted, but a top quality road tube does wonders for peace of mind and riding enjoyment as you stay focused on tallying up the miles instead of bemoaning the time you spend road-side fixing flats. And with today's road rims sporting deeper rim profiles, the 48mm valve length works on its own for many rims without having to worry about valve extenders.

Had an issue with a tire and went through 3 tubes on 3 rides. Wiped out my on hand stock and replaced with a non-threaded stem picked up at a LBS. Didn't like not having a nut to secure the stem. Re-stocked now with the 48mm threaded stems. These are just as good as the name brand tubes and if bought in Qty and you catch a sale, are at least half the price.

I was looking for a rubber tube that could hold air that I could place inside my tire for a more comfortable ride then without said rubber tube. These are rubber tubes capable of holding air. I have tested up to 110 psi. I primarily use these on my road bike, but they also make fun children's toys. They cannot be used as a flotation device in case of emergency.